/*********************************************************************************
 *Copyright:  (C) 2018 LingYun IoT System Studio
 *Author:  Guo Wenxue <guowenxue@gmail.com>
 *Copied by whut_zty <zhuty_cn@163.com>
 *Socket_client in sht_project.
 *Created in 20210113
 ********************************************************************************/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "sht.h"

#define SERVER_IP "127.0.0.1"
#define SERVER_PORT 9998

int main(int argc, char **argv)
{
    int conn_fd = -1;
    int rv = -1;
    char buf[1024];
    char GetSht[21];
    struct sockaddr_in serv_addr;
    char   databuf[64];

    conn_fd = socket(AF_INET, SOCK_STREAM, 0);
    if (conn_fd < 0)
    {
        printf("create socket failure: %s\n", strerror(errno));
        return -1;
    }

    memset(&serv_addr, 0, sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(SERVER_PORT);
    inet_aton(SERVER_IP, &serv_addr.sin_addr);

    if (connect(conn_fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
    {
        printf("connect to server [%s:%d] failure: %s\n", SERVER_IP, SERVER_PORT, strerror(errno));
        return 0;
    }

    OutputData(databuf, sizeof(databuf));

    if (write(conn_fd, OutputData(), strlen(OutputData())) < 0)
    {
        printf("Write data to server [%s:%d] failure: %s\n", SERVER_IP, SERVER_PORT, strerror(errno));
        goto cleanup;
    }

    memset(buf, 0, sizeof(buf));
    rv = read(conn_fd, buf, sizeof(buf));
    if (rv < 0)
    {
        printf("Read data from server failure: %s\n", strerror(errno));
        goto cleanup;
    }
    else if (0 == rv)
    {
        printf("Client connect to server get disconnected\n");
        goto cleanup;
    }

    printf("Read %d bytes data from server: '%s'\n", rv, buf);
    sleep(2);

cleanup:
    close(conn_fd);
}

